Days to Germination: 7-14 days
Helianthus annuus. Easy to grow in full sunlight, Sunflowers should be sown in well-draining, loamy soil after the danger of frost has passed. Plant the seeds 1⁄2" deep and keep the seedbed uniformly moist until the seedlings emerge, about 10 days after sowing. Weed carefully and keep well-watered until established. You may also start Sunflowers indoors 3 weeks before the last frost date. Plant seeds 1⁄2" deep in pots of seed-starting mix at 65° to 85°F. Provide even moisture, strong light and good ventilation. When the seedlings are large enough to handle, thin or transplant them 12" to 24" apart in the garden. To harvest for snacking, wait until the seeds are plump and beginning to loosen from the head. Cut the flower from the stem and then rub the seeds from the head with your fingers. Roast the seeds at 300°F, checking every 10 minutes or so until perfect.